<?php

namespace app\common\library;

class YuPost
{
    const VERSION = '6.0.5';

    protected $errorString = '';

    public static $instance ;

    /**
     * @title 单例调用
     * @description 单例调用
     * @author Admin ldy
     * @time 2018/9/25  12:22
     */
    public static function getInstance(){
        if (YuPost::$instance == null){
            YuPost::$instance = new \app\common\library\YuPost;
            return YuPost::$instance;
        }else{
            return YuPost::$instance;
        }
    }

    public function __construct(){
        //初始化
    }

    public function setErrorString($msg){
        $this->errorString = $msg;
    }

    public function getErrorString(){
        return $this->errorString;
    }


    public static function post($url, $post_data = '', $timeout = 5){
        $ch = curl_init();
        curl_setopt ($ch, CURLOPT_URL, $url);
        curl_setopt ($ch, CURLOPT_POST, 1);
        if($post_data != ''){
            curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
        }
        curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);

        curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);

        curl_setopt($ch, CURLOPT_HEADER, false);

        $file_contents = curl_exec($ch);

        curl_close($ch);

        return $file_contents;

    }


    public static function post2($url, $data){

        $postdata = http_build_query(
            $data
        );

        $opts = array('http' =>

            array(

                'method'  => 'POST',

                'header'  => 'Content-type: application/x-www-form-urlencoded',

                'content' => $postdata

            )

        );

        $context = stream_context_create($opts);
        $result = file_get_contents($url, false, $context);
        return $result;

    }


    public static function post3($host,$path,$query,$others=''){

        $post="POST $path HTTP/1.1\r\nHost: $host\r\n";

        $post.="Content-type: application/x-www-form-";

        $post.="urlencoded\r\n${others}";

        $post.="User-Agent: Mozilla 4.0\r\nContent-length: ";

        $post.=strlen($query)."\r\nConnection: close\r\n\r\n$query";

        $h=fsockopen($host,80);

        fwrite($h,$post);

        for($a=0,$r='';!$a;){

            $b=fread($h,8192);

            $r.=$b;

            $a=(($b=='')?1:0);

        }

        fclose($h);
        return $r;

    }



}
